Overview
This article provides the answer key for the practice problems included in Unit 2 Lesson 5 of your textbook. These problems are designed to help you master the concepts covered in the lesson and prepare you for upcoming assessments.
Answer Key
Problem 1:
Find the area of a triangle with a base of 10 cm and a height of 8 cm.
Answer: 40 cm²
Problem 2:
A rectangular garden has a length of 15 m and a width of 10 m. How many square meters of grass will be needed to cover the entire garden?
Answer: 150 m²
Problem 3:
A cylinder has a radius of 5 cm and a height of 10 cm. What is its volume?
Answer: 250π cm³
Problem 4:
A cone has a radius of 6 cm and a height of 8 cm. Find its volume.
Answer: 96π cm³
Problem 5:
A sphere has a radius of 4 cm. What is its surface area?
Answer: 64π cm²
Additional Practice:
Problem 6:
A rectangular prism has a length of 12 cm, a width of 8 cm, and a height of 10 cm. Find its volume.
Answer: 960 cm³
Problem 7:
A pyramid has a square base with a side length of 10 cm. The height of the pyramid is 15 cm. What is its volume?
Answer: 500 cm³
Problem 8:
A hemisphere has a radius of 6 cm. Find its surface area.
Answer: 72π cm²
Tips and Tricks:
- When solving problems involving area or volume, remember to use the appropriate formulas.
- Draw a diagram of the object you are working with to help you visualize its dimensions.
- Check your answers by using different methods or formulas.
- Practice regularly to improve your understanding and problem-solving skills.
Conclusion
By completing these practice problems and reviewing the answer key, you can reinforce your knowledge of the concepts covered in Unit 2 Lesson 5. Continue practicing to build your confidence and prepare for future assessments.